Although there has been increasing focus on the employment mobility associated with migration and return, a number of important research gaps can be identified. First, there has been greater focus on occupational mobility than on changes in economic activity, although it is their interaction which determines welfare outcomes. Moreover, most studies of economic activity have focused on either self-employment, or the simple dichotomy between being employed versus unemployed, neglecting the shifts between full-time, part-time, and casual employment. Secondly, research on the determinants of these different types of employment mobility has been relatively narrowly focused on individual economic factors. Most studies have been fragmented, especially lacking a comparative element. To address these gaps, descriptive statistics and Bayesian multilevel models are applied to a pan-European panel survey of 3851 young returned migrants. The findings disclose that positive shifts in employment mobility are more evident in economic activity than in occupations, and for those with a lower occupational status prior to migration. Although a range of significant determinants of employment mobility are identified, the findings also demonstrate that education is a major driver of occupational mobility, while marital and family status are important influences on economic activity shifts.